O. K. Here's my 2 cents.
We've been here for just under 4 years. Until November of 2012 I had an EZ Go RXV (2010) and absolutely loved it .One problem was I used it too much. You see people are under the assumption that the batteries are warranteed for 3 years.That's not the case .The battery warranty is based on amp hours so the more you use it the more you're going to have to replace the batteries for roughly $750.I was going through battteries every 13 months or so.
I presently own a 2013 fuel injected Yamaha gas cart.As stated I bought this cart in November.Actually the last week of November & I've put 5600 miles on it in just about 6 months.I put about $14 a week in gas so if you mulrtiply that out over 53 weeks (13 months) you'll see I'm not saving money compared to replacing batteries in an electric.
The biggest advantage to owning a gas cart is the distance I can go without worrying about losing power.In my electric 50 miles was about all I could get from a full charge.In a gas I get over 200 miles on a tank of gas.
My wife still has an electric EZ Go Rxv ( the best electric by far in my opinion) which she loves .Of course she doesn't use hers like I do mine.
When people ask me how I like the gas compared to my EZ Go I tell them I like it but it's like I went from a Cadillac to driving a 4 wheel drive truck.The electric is so smooth & quiet & the gas is noisy & doesn't handle as nicely as the electric. I also say if they came out with a battery that lasted for someone like me I would go back to the electric in a heartbeat.